Title:
HIGH-PURITY CARBOXYLIC ACID ESTER AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2017/057320
Kind Code:
A1
Abstract:
The present invention makes it possible to provide a high-purity carboxylic acid ester in which the Ag, Al, Au, Ca, Cr, Cu, Fe, K, Mg, Na, Sn, and Zn contents as metal impurity contents are each less than 1 ppb and the anionic impurity content is less than 1 ppm. The present invention also makes it possible to provide a method for producing a high-purity carboxylic acid ester, the method including a step for bringing a crude carboxylic acid ester that contains anionic impurities and Ag, Al, Au, Ca, Cr, Cu, Fe, K, Mg, Na, Sn, and Zn as metal impurities into contact with a cation-exchange resin (II), followed by a step for bringing the high-purity carboxylic acid ester into contact with an anion-exchange resin (III).
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Inventors:
MUNEYASU KUNIAKI (JP)
Application Number:
PCT/JP2016/078379
Publication Date:
April 06, 2017
Filing Date:
September 27, 2016
Export Citation:
Assignee:
MITSUBISHI GAS CHEMICAL CO (JP)
International Classes:
C07C67/56; B01J39/04; B01J39/18; B01J41/04; B01J41/12; B01J47/02; C07C69/675; C07C69/68
Foreign References:
| CN102381973A | 2012-03-21 | |||
| CN104610061A | 2015-05-13 | |||
| CN102320969A | 2012-01-18 | |||
| JPH08283202A | 1996-10-29 | |||
| JPH10316594A | 1998-12-02 | |||
| JP2007117781A | 2007-05-17 | |||
| JPS54157504A | 1979-12-12 | |||
| JP2009155208A | 2009-07-16 | |||
| JPS61207345A | 1986-09-13 |
Attorney, Agent or Firm:
KOBAYASHI Hiroshi et al. (JP)
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